Laender



(No Model.)-

G.. A.V HOFFMANN & M.. PRIEDLAENDER. RAILWAY RAIL JOINT.

No. 532,421. Patented Jan. 8, 1895.

f UNITE-n STA-ras jPnrnNT Prion; V

GEORG ADOLF HOFFMANN AND MAX FRIEDLAENDER, OF BERLIN, GER- MANY.; SAIDHOFFMANN ASSIGNOR OF AONF-HALF TO SAID. FRIED- LAENDER.

RAILWAY-RAIL Jolnr,A

sPncIFrcATIon farming'pero of Letters Patent NO. 532,421, 'daten Januarys, 1895.

Application filed September 4,1894. Serial No. 522,106. (No model.)Patented in Germany April 10,1892,N 721645. ,and April 2,1893, No.73,922; in Switzerland April 29, 1892, No. 5,085 in France April 29,1892, No. 208,610; in ItalyMay 14,1892, No. 31,874; in EnglandfMay 20,1892, No. 9,639, and in Belgium April 29,1893, No. 99,480.

To all whom it may concern,.-

Be'it known that we, GEORG ADoLF HOFF- MANN and MAX FRIEDLAENDER,subjects of the King of Prussia, German Emperor, and residents ofBerlin, in the Kingdom of Prusl sia, German'Empire, havev inventedcertain new and useful Improvements in Railwayin Belgium, No. 99,480,dated April 29, 1893;

`in Italy, No. 31,874, dated May 14, 1892, and

in Great Britain, No. 9,639, dated May 20, 1892,) of which the followingis an exact specication. l

s This invention relates to railway railjoints, and consists incombining with the rail proper in a manner presently apparent anauxiliary, safety rail, and our invention, further, re#

lates to the-arrangement of a fish-'plate 'of special configurationwithin the space be-1 tween the twoi stems belonging to the mainrail andthe auxiliaryrail, said fish-plate having a section similar to that of adoubleheaded rail, and resting with its lower head on the outer portionof thebase ofthe mainrail (the inner portion of the base ofthe auxiliarysafety-rail being cut away),while the upper head of said lsh-platesupports the ad joining portions of the heads of the two rails inquestion, so that, as the three parts are rrnly connected by bolts, avery secure joint is produced.

As a further important, although negative feature, it may be mentioned,that by the employment of the improved railway-rail-joint no alterationwhatever of the track to be irnproved is requisite, as the auxiliarysafetyrail as well as the double-headed fish-plate maybe combined withthe main-rails while the latterv remain lying ,on the sleepers inworking position and condition.

In order to make our invention more clear, we refer. to the accompanyingdrawings, in

which similar letters denote similar partsl rail withthe auxiliarysafety-rail, Fig. 2 is l5o a plan view of the same.' Fig. 3 is asection, taken on line8-9 of Fig. 2. "Fig, 4 is a sectionthrough amodified-form of construction, allot the rails being double-headed- Fig.5 isa side-view of a modified forni ot' the central fish-plate.v Fig. 6is a section through a modified form of the outer auxiliary rail. Fig. 7shows this moditied outer rail connected with the main-rail and thecentral fish-plate rail.

Referring to Figs. 1 to 3, a is the main rail resting on the sleepers b.These latter support also the auxiliary rail c, which, however, is heldalso bybolts through the adjoining ends of the respective twomain-rails, and,

in fact, may be held solely by them. The` ends'c `c2 of the auxiliaryrail c slope downward below the bearingsurface of rail a. The wholeauxiliary rail, moreover, slopes outward in itsI entire length, sothat.but a portion c8 of curved shape remains as high as the bearing surfaceofthe main-rail. By the cornbined effect of these two inclinationsWheels with groove like deformations, Vformed by long use of the wheels,may go smoothly over the joint without getting the least shock. The fastconnection between the two rails maybe considerably increased byarranging between them, t'. e., in the space between the stems of therails (above the feet and below the heads of the same) a specialdouble-headed fishplate d resting with its lower head on the portion aof the foot ot` the main-rail, and supf porting with its upper head theheads a2 and c4 of the main-rail and the auxiliary rail. All these partsare connected by the bolts e, together with the ordinary innertish-plate f. It is obvious that all this may be made without affectingthe track in any way, whereby an essential difference with regard toother arrangements of joints is constituted.

We prefer to provide the central fish-plate` cl with oblong holes d forthe bolts e, instead of with round ones, as by the employment of thesame a certain degree of elasticity is left to the joint, so that theadvantages obtainable by an elastic joint are preserved, while itsdraw-backs are prevented by the arrangement above described. Further,instead of cutting the inner portion of the base of the auxiliary railcompietely away, as in Fig. 3, we prefer to leave a rib c5, which restson the rim or the outer portion of the base of the main-rail, or takesinto the spacebetween said rim and the lower head of the centralfishplate, so that this head rests partly also on the said rib, asrepresented in Fig. 7.

Having now particularly described the nature of our invention, what wedesire to secure by Letters Patent of the United States 1s- 1. In arailway-rail-joint, the combination with the rail proper, ofasafety-railarranged outside the track, said safetyrail having its endssloping downward, and being sloping outward throughout its entirelength, a fishplate resting on the foot of the mainrail and supportingthe heads of both the rails and being arranged between the stems of thelatter, for the purpose as described.

2. In a railwayrailjoint, the combination with the rail proper, ofasafety-raii arranged outside the track, said safety-rail having itsends sloping downward, and being sloping outward throughout its entirelength, a fishplate resting on the foot of the main-railand on a rib ofthe auxiliary rail, and supporting the heads of both the rails,being-arranged between the stems of the latter, for the purpose asdescribed.

3. In a railway-rail-joint, the combination with the rail proper, of asafety-rail arranged outside the track, said safety-rail having its endssloping downward, and being sloping outward throughout its entirelength, adoubleheaded fish-plate resting with its lower head on the footof the main-rail and on a rib of the auxiliary rail, and supporting withits upper head the heads of both the rails, being arranged between thestems of the latter, for the purpose as described.

4. In a railway-railjoint, the combination with the double-headedmain-rail proper, ot' a double-headed safety-rail arranged outside thetrack, said safety-rail having its ends sloping downward, and beingsloping outward throughout its entire length, a double-headed fish-plateresting with its lower head on the foot of the main-rail and on a rib ofthe auxiliary rail, and supporting with its upper head the heads of boththe rails, being arranged between the stems of the latter, for the purpose as described.

5. In a railway-raiLjoint, the combination with the double-headedmain-rail proper, of a double-headed safety-rail arranged outside thetrack, said safety-rail having its ends sloping downward, and beingsloping outward throughout its entire length, a double-headed fish-plateresting with its lower head on the foot of the main-rail and on a ribofthe auxiliary rail, and supporting with its upper head the heads ofboth the rails, being arranged between the stems of the latter, thewhole being connected by bolts with each other as well as with anordinary fish-plate arranged inside the track, 'for the purpose asdescribed.

In testimony whereof we have signed this specification in the presenceof two subscrib ing witnesses.

GEORG ADOLF HOFFMANN. MAX FRIEDLAENDER.

Witnesses as to signature of Georg Adolf Hoffmann:

R. HERPICH, W. HAUPT.

Witnesses as to signature of Max Friedlaender:

R. HERPICH, E. SCHULTZE.

